Certification Details BLS - Basic Life Support ACLS - Advanced Cardiovascular Life Support Job Details RN Medical / Surgical/ Telemetry position available at MercyOne North Iowa Medical Center. Part of the Trinity Health hospital system, located in Mason City, Iowa. Job Requirements Active RN license required. Must have experience in a medical, surgical, or telemetry unit. Schedule Information The schedule includes every third weekend. Holiday duty is required on an every other basis. The shifts will be Friday, Saturday, Sunday.